Cork taint is very important for wine manufacturers as it can affect all wines, irrespective of price and quality. Cork stoppers are usually responsible for taint, although studies have found that other factors, such as wooden barrels, storage conditions and transport of corks and wine, can also cause these undesirable characteristics.

Pressure Swing Adsorption (PSA) nitrogen generators are capable of producing high purity nitrogen gas from a single simple commodity, air. This purity can also be acquired through cryogenic systems, however, these are considerably more complex and expensive so can only be justified where consumption is extremely high.